The most popular fluid used in diaphragm-type gas pilot proving controls is mercury.

Answer the following statement true (T) or false (F)


True

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By 1937, ____________________ draft horses became the preferred breed to use on the farms of the Midwest due to their smaller, more compact build and economic efficiency.

Fill in the blank(s) with the appropriate word(s).

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Metric prefixes represent powers of ____.

A. one B. two C. ten D. twelve

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A growth hormone produced naturally in the pituitary gland of the cow is called

____________________.

Fill in the blank(s) with the appropriate word(s).

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If the remote bulb was removed from the evaporator outlet what would happen to the thermostatic expansion valve?

A. It would open fully B. It would open only half way C. It would close completely D. It would have no effect on the thermostatic expansion valve because it is controlled by pressure

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